We do plan on having a Quick Play button that gets you into a game faster - hadn't spent much time thinking about preparation auto-selection though. The basic idea was to just run through a short animation sequence (1-2 seconds) of selecting a random dungeon, race and class, then letting the player select what they wanted to prep with accordingly and go.

Oddly enough, the thing that seems to take the longest is dungeon selection due to quest load. We're working on feedback to make that quicker.